EP 4098395 A4 20230726 - FLUX FOR ELECTROSLAG WELDING AND ELECTROSLAG WELDING METHOD
Title (en)
FLUX FOR ELECTROSLAG WELDING AND ELECTROSLAG WELDING METHOD
Title (de)
FLUSSMITTEL FÜR DAS ELEKTROSCHLACKESCHWEISSEN UND VERFAHREN ZUM ELEKTROSCHLACKESCHWEISSEN
Title (fr)
FLUX POUR UN SOUDAGE SOUS LAITIER ET PROCÉDÉ DE SOUDAGE SOUS LAITIER
Publication
Application
Priority
- JP 2020038722 A 20200306
- JP 2021006838 W 20210224
Abstract (en)
[origin: EP4098395A1] The present invention provides a flux for electroslag welding, said flux enabling the achievement of electrogas welding that exhibits excellent welding workability and slag separability, while being free from the occurrence of seizure; and an electroslag welding method. This flux for electroslag welding contains, relative to the total mass of the flux, from 5.1% by mass to 30.0% by mass of CaO, 17% by mass or less of SiO<sub>2</sub> and from 35% by mass to 73% by mass of CaF<sub>2</sub>; the amount of the CaO is 30% by mass or more relative to the total mass of basic oxides; the amount of SiO<sub>2</sub> is 80% by mass or more relative to the total mass of basic oxides; the amount of CaF<sub>2</sub> is 80% by mass or more relative to the total mass of fluorides; and the value calculated by formula (1) is from 5 to 56. (1): (2 × (CaF<sub>2</sub>) + (CaO))/(SiO<sub>2</sub>) In formula (1), the chemical formulae in parentheses represent the contents (mass%) of respective components expressed by the chemical formulae relative to the total mass of the flux.
IPC 8 full level
B23K 35/30 (2006.01); B23K 35/362 (2006.01)
CPC (source: EP KR US)
B23K 25/00 (2013.01 - KR US); B23K 35/30 (2013.01 - EP KR US); B23K 35/3602 (2013.01 - EP); B23K 35/3605 (2013.01 - EP); B23K 35/362 (2013.01 - EP KR US)
Citation (search report)
- [X] EP 0092621 A2 19831102 - KAWASAKI STEEL CO [JP]
- [X] US 4437906 A 19840320 - TATEISHI JUNJI [JP], et al
- [X] JP S6061195 A 19850408 - KOBE STEEL LTD
- [X] KR 100419170 B1 20040214
- See also references of WO 2021177106A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4098395 A1 20221207; EP 4098395 A4 20230726; CN 115190826 A 20221014; CN 115190826 B 20240528; JP 2021137855 A 20210916; JP 7440303 B2 20240228; KR 20220129643 A 20220923; TW 202138102 A 20211016; TW I778536 B 20220921; US 2023111990 A1 20230413; WO 2021177106 A1 20210910
DOCDB simple family (application)
EP 21764392 A 20210224; CN 202180017615 A 20210224; JP 2020038722 A 20200306; JP 2021006838 W 20210224; KR 20227029953 A 20210224; TW 110107846 A 20210305; US 202117905389 A 20210224